MDX security problem

Could you please help me with security ? I don't have idea why it doesn,t work. I see all dimension but I shoudn't see produdct 2.

                       Values                    Security Count

Product1           100                            1

Product2           200                          

Product3           150                            1

Grand Total       450                            2

and my security MDX

NonEmpty(
[Product].[ID].Members,
(StrToMember("[CK_SECURITY].[Login].["+UserName() +"]"),
[Measures].[CK Security Count]
)

It looks like Dimension Data doesn't join with measures.

Thx